Selective impulse-transmitter.



J. Al WOTTON.

SELEGTIVB IMPULSE TRANSNHTTER.

APYLIOATION FILED FEBS. 1912.

1,100,41 3, Patented June 16, 1914.

SHEETS-SHEET 1.

lll/[IIIA 'llllll ,v Y Y. *WAM Hlm M" au l Illilim J. A. WTTON.

SELECTIVE IMPULSE TRANSMITTER.

APPLmATIoH-HLBD FEB.8.1912.

posiuion to be engaged by the inner ends of ,the plungers 20, t2() is a pivotally supported plate Ll5 adapted when actuated by one of iacent to the motor magnet 11 is a cam dish:

' x50 controlling;n a set oi? contact springs 51.

,i the latch plate ln the normal position of the parts the lower one of these springs is in engagement, with a notch 52 in the disk 50 and the contacts are open. :is the shaft begins to rotate, however, the contact is closed and remains y so until 'the disk 50 'has been turned through one revolution. These springs control the circuit of the motor magnet 1l. Upon the opposite end ot the shaft 5 is a disk having a raised portion 56 thereon adapted to engage and close Contact between a. set' of springs 57 tor the purpose hereinafter set t'orth. Each plunger is provided on its outer end with an index button GO to designate the number of the station on the line which will respond to the operation of the particular key.

i The operation of the apparatus and ein. cuits may be best vtollowed by reference to Fig. G and is as follows. ,issumingY that the parts are in the position shown in Fig. 6 with the contacts 57 closed and those at 51 open and it is desired to signal 'the party whqse selector operates, in response to the operation ot key index: 25. TWhen this lrey is operated the plunger ismoved into position to permit the finger portion Q5 of the spi-ingrr vto drop into the notch and bring the notch 32 into engagement Wit-h ln this position the plunger 20 closes the contacts 46 and 47, and

mai itainsl them closed until said plunger is rel lased.. The closure of the contacts 47 completes two circuits, one of which is through a 'vibrator 65, the other being through an impulsetransmitter 66 and the motor magnet 11 in series. The first of these circuits may be traced from one side of a battery G7, over conductors (3S and 69, winding ot vibrator 65, an operating contact 70 thereof. conductor 71, contacts "-1-7, conductor J 72", to the other side of the battery 67. Current in this path causes the operation of the vibrator to cause the alternate opening' and closingr of the contacts 70 and 75 of the Vibrator. The other circuit closed by the contacts 47 may be traced. from' one side of battory 67 over cdnductor 6R, conductor 76, .winding ot impulse transmitter 66, conductor 77, 'winding oit motor magnet 11, conductor 78,y contacts 75 of the vibrator 65, conductor 79,conductor 71, cont-acts 47, conductor 72, to the othen side of battery 67. This lastcircuit is alternately opened and closed at contacts 75 by the operation ot the vibrator and at` each closure thereof causes the attraction of the armature 10 ot the no is tor the purpose of sending current im; pulses out on the luie wires. 85 and'SG, but

first few preliminary steps ot' the shaft 5 inasmuch as theclosure ot the contacts 46 and`57 has established a circuit 'for battery S7 which may be traced as follows: from one side of battery 87 conductor 9S. contacts 4G, conductor 89, line wire S5, through selector bridge 90, line wire SG. conductor 91., contacts 57, conductor 92. conductor 93 to the other pole ot said battery. So long', there-l tore', as-the contacts 57 are closed, there will be a steady flow ot current to the line wires which is in the nature ot a longr impulse. .is soon, however, as the shaft 5 has been rotated a. sufficient distance to move'the projet-.tion 56 away from these springs 57 to open the last traced circuit, the opening and ,closing of the contact 8O will control a circuit of the battery 87 whichI may be traced l as Jfollows: from one side of battery 87, conductor 88, contact 4.6, conductor 89, line wire S5. selector bridge 90, line wire S6, conduetor 34, contact 8O and conductor 95 to the other pole oi" the battery 87. These impulseswvill continue between the time of the opening: of the contacts 57 and the time that lthe reduced portion 27 ot the spring 25 drops into the notch 16 ot the disk 15. iWhen this occurs, the spring 25 will be dropped into Contact with the bar d() and k will complete a circuit for battery to line similar to that traced through thecontacts 57 except that the contacts Q5 and L10 will be substituted for contacts 57. This will shorteircuit the impulse'transmitter contacts and maintain current upon the line vlor a considerable period ot time Which may be termed the ringing period. The length ol this period is the time required for the notched portion 16 nt the disk 15 to pass under the spring' Q5 and to again lift it from engagement with the bar 40. Shortly after willbe brought into vengagement with the trigger finger 36 operating it to raise the latch plate andrelease the plunger 20 peropeningl the contacts 4:6 and L17. The motor magnet 11 Will'continue operating, however, because of the fact that after the first few h v the cam and as these contacts are in multiple with the contacts 47, the operating! Ycircuit of the niotor `magnet will be closed "until, tlicam 50 has rotated into position to is ine'l'l'ectire for this purpose during thel thc contact between the spring 25 and thel bar -tO has been opened, the tripping;r linger 375 niitting' it to return to normal position and preliminary steps the contacts 51 were closed' The Contact SOcf the `impulse transmitter I y a motor magnet for said' ated by any one of said plungers, and spring l contacts controlled by the operation of said swinging plate.

l2. Impulse controlling means comprising in combination a rotatable shaft. a driving motor therefor. adapted when operated to turn said shaft through one complete revolution. a plurality of cani disks carried by said shaft, a corresponding number of plungers. a spring contact under the joint control of each oi said cam disks and a corresponding plunger. an impulse transmitter operating in conjunction with each of said spring contacts, means for holding said plunger in its operated position. releasing means therefor,l operated in the rotation of said shaft. an operating circuit for said magnet under initial control of any one oi said plungers, and means operated by said shaft for continuing said circuit after the release of the plunger and until the completion of the revolution of said sb aft.

13. The combination with line wires, of a source of current, an impulse transmitter for intermittently connecting'said source ot' current, lwith said line Wires, a rotating shaft, shaft, means for operating said motor magnet and said impulse t ansmitter 'in unison, means under control of said shaft for preventing the pre liminary operation oi. said transmitter from sending outy impulses, and means also under control of said shaft for determining; 'the number of impulses sent out in lthe operation of said impulse transmitter.

11i. The combination with line aires, et' a source of current, any impulse 'transmitter for intermittently connectingid source of current with the line wires, rotating shaft, a motor magnet for said slia'rftpmeans for4 operating said motor magnet and impulse transmitter in unison, contacts controlled by said shaft for maintaining a preliminary long impulse of currentI upon the line and contacts also controlled by' said shaft for applying continuous enfrent to the line wires after the requisite number of impulses have been sent. p 1

l5. The combination with line wires. ot a source of current, an impulse transmitter, contacts controlled thereby for intermittently connecting said source of currentc with said line Wires, a rotating shaft carrying cam disks, a motor magnet for operating said shaft, a vibrator for operating,` said motor magnet and said impulse transmitter in unison. a plunger. a circuit 'Por said vibrator closed by the operation of said plunger. contacts controlled by one .of the disks upon g said shaft for short circuiting the contacts" source of current.

of' said impulse transmitter during a pre-Q 'plunger member liminary movement ot' said'shaft.r andv con-J tacts controlled jointly by'said' plunger and another camdisk upon said shuttinr short circuiting the impulse transmitter .contacts i 1,100,4as

after the requisite number of current im, pulses have been sent.

'16. Impulse controlling means comprising in combination with an"y impulse transmitter, a movable member adaptedltp move in one direction, means for synchronizing the operation 'of said -moyablemember and said impulse transmitter, means to prevent increment of said member in reverse direction, contact controlling devices carriedl by said movable member, plungers, and means under the joint control of said contact controlling devices and said plungers for controlling the number of impulses sent outv b V said transmitter.

17. Impulse controlling means comprising in combination with an impulse transinitter. a-movable member, means for synchronizing the operation of said movable member and said impulse transmitter, con-1 tact` controlling cam disks carried by said member, a corresponding number of plun gers, and contact springs under the joint control of any one of said cam disksand its corresponding plunger for controlling the number of impulses sent out by said trans` iniiter.

1S.- The combination of an impulse transmitter and an impulse vreceiving circuit, of a plunger member, a rotatable shaft, contacts controlled by the depression of said for sending a preliminary. impulse over said circuit, a 'cam disk carried by said shaft, and contacts under the control of said vearn-disk for detemnining the number of succeeding impulses sentl over said circuit by said impulse transmitter.

19. The combination of an impulse transmitter and an impulsereceiving circuit, of a plunger, a rotatable shaft initially under the control of said plunger, spring contacts closed by the depression of said plunger for sending a preliminary impulse ove;l said circuit, a cam disk carried by" said shait. and contacts under the control of said cam disk for determining the number oi? suceceding impulses sent over said circuit by said i impulse transmitter.

20. The combination with line Wires, Vot a source of current, an impulse transmitter for intermittently connectingsaid source of ourrent with said line `Wires, a rotating shaft, meansI ,for operating said shaft. and said impulse transmitter in unison. a plurality of. cam disks carried by said shaft, and contacts under thecntrol of said cam disks for de` termining the number and character ofimpulses sent outI by the operation oi said impulse transmitter.

21. The combination of line 1wires, of a v `an impulse transmitter for intermittently connecting Asaid source of current with said line Wires, a rotating shaft., a vibrator for operating said shaft, :rndsaid impulse transmitter in unison, con

tcts under the control -of said shaft, for sent out by the operation of said impulse sending out a preliminary long impulse and transmitter.

for preventing the preliminary operation of In witness whereof, I hereunte subscribe said impulse transmitter from sending out my name this sixth da of Feb. A. D. 1912. shot impulses a lurality of cam disks car- JA ESA. WOTTON. ried b said' shag, and contacts under the i contro of said cam disks for 'determining the` nmnbexy of succeedingl short impulses Witnesses:

IRvING MACDONALD, GUY M. CAMPBELL. 

